Cleaning cloth for gun and cannon bores

ABSTRACT

A cleaning cloth body for the inside of firearms for clearing and removing of powder, gas, dirt oil, dust, wetness, and rust from the inside of firearms. The porosity, extension-and-contraction elasticity, absorbability, heat-proof, cold-proof, durability against pulling and tearing, and abrasion-proof qualities of a foamed urethane resin is used to clean the firearm. The foamed urethane resin is made by the synthesis of polyester and diazomianate. When the foamed urethane resin, made by the synthesis of polyester and diazomianate, is molded, a net-woven cloth, is inserted between two layers of foamed urethane resin, and the size of the urethane adjusted to the caliber of the firearm.

BACKGROUND OF THE INVENTION

The present-day cleaning method of the firearms is an important dailytask because it is in the same condition at present as old days. Whenfired if some dust, rust, etc. remain inside the firearms, their body isbroken and unavailable. It is to be an accident involved in the humanlife. The inside of the firearms has to be cleaned during the maneuver.This cleaning task was seriously a heavy labor. And the smoke of powder,gas, dust, etc. are taken away and cleaned by the way that the cut clothheld at the washing arrow on the top of the cleaning utensil of thefirearms is steeped in the spindle oil. But besides the area where thecotton cloth is very rich, most of the chemical fiber to strengthen thecotton is so much mixed spinning cloth that more than ten pieces of thecut cloth must be used in the cleaning procedure per once. For thatreason, a great deal of cloth is tamponingly bound on the top of thecleaning rod inside the firearms, but there are a lot of weak pointsthat the smoke of powder, dirt, oil, soot, etc. in the muzzle and in thefiring tube of the firearms cannot be taken away and clearedsufficiently even though many many times cleaned. Accordingly thecleaning method has been used as it was before and the soldiers in thecharge of the cleaning task are beyond words in terms of their labor.When the cut cloth is used, however, there is the merit that its cost islow and it is thrown away after used. Despite the progress of scienceand technology, when the cleaning method for firearms is used as wasbefore by the cotton cloth, the absorbability and adherence of the clothare poor, and it is inconvenient and unable to take away the smoke ofpowder, gas, dirt, sand, etc. Moreover, whenever fired both in a blankshot and in a ball cartridge, one week or two are to be taken in thecleaning task. This invention is the product developed to solve theseproblems. (The cut cotton cloth had the high weak points that it waspoor at the elasticity, bubbleness and many-holes-flexibility, andunable closely to touch the inside of the firearms.)

SUMMARY OF THE INVENTION

That is to say, this invention having the foamed urethane resin in termsof the material concerns the cleaning cloth body for firearms aimed atabsorbing and taking away the smoke of powder, dirt, sand, etc. by theway that the cleaning cloth body for firearms (1) is formed in theflat-board pattern and the long-cone pattern; the inside of the firearmsis cleaned by the cloth bound on the top of the washing arrow or thecleaning rod of the cleaning utensil inside the firearms; the plasticityand many-holes-bubbleness of the foamed urethane resin are utilized.

Now, the foamed urethane resin of this invention consists of thepolyester resin and the diazomianate, and is molded in the long-boardpattern by being torn when formed in the flat-board pattern and by theway that the net-woven cloth (2) is held in the middle of the foamedurethane resin in order to strengthen its expansibility.

Next, after the foamed urethane resin board is continually cut in theprescribed size, width, thickness and length, the cleaning cloth bodyfor firearms (1) is molded in the needed form, and inserted andtwofolded in the horizontal grain (b) of the washing arrow put on andoff the top of the cleaning utensil inside the firearms. This inventionhas been made such that the smoke of powder, gas, dirt, etc. can bethrown away in this way.

Furthermore, the inserted hole (e) inside, and the length grain outside,the thick foamed urethane resin board are simultaneously formed by thepunching cutter, and punched continually with evert five millimetersheading the inside circle of the firearms; thus the cleaning cloth bodyfor firearms (1) of the long-cone pattern is molded; such anextension-and-contraction free tube (7) as the rubber tube is appliedwith the binder and inserted, pressed, and fitted inside the insertedhole (e); moreover, the above and below sides of the cleaning cloth bodyinside the firearms (1) are wound inside toward the inserted hole; theoutside circle of the washing arrow of the cleaning cloth for firearmsof the long-cone pattern is fitted to, and taken off from, the woundcloth body; and this invention is thus used as the cleaning cloth bodyfor firearms.

Because the cleaning cloth body of the long-cone pattern made of thefoamed urethane resin is formed five millimeters thicker than the insidecaliber of the firearms, the cleaning cloth body being inserted insidethe firearms, it closely touches the spiral grain inside the firearms,shrinking toward the axis of of the washing arrow and the cleaning rodinside the firearms, and thereby the smoke of powder, gas, dirt and dustare wiped off and at the same time absorbed into many bubbles of thefoamed urethane resin and removed.

One side of the above-described cleaning cloth body for firearms made ofthe foamed urethane resin in the flat-board pattern is pressed andinserted in the horizontal grain of the washing arrow (s) put on and offthe top of the cleaning utensil inside such firearms as the 64 rifle,small firearms, light and heavy machine guns, and 22 mm machine gun, andwith the washing arrow (s) as the axis, the cleaning cloth body forfirearms (1) made of the foamed urethane resin is twofolded, insertedfrom the forward part of the firearms to its muzzle, and repeatedlymoved before and behind like a piston movement, thereby the smoke ofpowder, gas, dirt and dust are taken away. That is to say, theplasticity of the foamed urethane resin is utilized, and the smoke ofpowder, gas, dirt and dust are absorbed and taken away by the openingand shutting of many bubblles. After used, if it is steeped in theliquid alcoholic detergent on fermentative one, several minutes afterthat, only waved in that liquid, dirt, gas, dust, etc. come up andexpelled, thus quickly cleared. Because the material is a kind of thepolyester, it is water-running-away and dries easily. For this reason,it can be used at least several times, therefore it is economical.

Furthermore, the cleaning cloth body for firearms made of the foamedurethane resin in the long-cone pattern is molded as follows: it is madefive millimeters larger than the caliber of the firearms; the insertedhole in the center and several lines of the length-concave parts orgrooves (4) (4a) in the outside circle are punched at the same timeregarding the tkick foamed urethane resin board (a): theexpansion-and-contraction-free tube (7) is inserted and fixed in thecircle of the inserted nole (e); the above and below sides are appliedwith the binder; the expansion-and-contraction-free tube (7) is turnedto the outside circle of the inserted hole (e); the above and belowsides of the foamed urethane resin are bound and fixed, or the above andbelow sides are waved.

Next, the inserted hole in the center of the thick foamed urethane resinboard and several lines of the length-concave parts in the outsidecircle are punched at the same time, thus the cleaning cloth body forfirearms (3) (3a) is formed; inside the inserted hole (e), in the belowpart of the washing (s) put on and off the top of the cleaning utensilinside the firearms, in the inserted part (9) and the below part is madethe screw thread; the binder is applied in the outside circle of thesupporting axis (8) molded as a body, inserted and pressed in theinserted hole (e) and at the same time, is applied in the above andbelow sides of the cleaning cloth body for firearms: the above and belowparts are bound and fixed in the outside circle of the supporting axisas a body; thus the cleaning cloth body for firearms of the long-conepattern is formed, and instead of the washing arrow, put and off the topof the cleaning utensil inside the firearms, repeatedly inserted andtaken out before and behind like a piston movement; thereby the smoke ofpowder, gas, dust, sand, etc. are removed. This is the actual appearanceof the cleaning cloth body for firearms.

Still more, the inserted hole (e) in the center of the thick foamedurethane resin board and several lines of the length-concave parts orgrooves (4) (4a) in the outside circle are at the same time; inside theinserted hole, in the below part of the supporting axis (11) and thegrip (14) are punched the horizontal holes (12); the above and belowsides of the pulling string (13) are inserted and returned in each ofthe fixed holes (15); thus the binder is applied in the outside circleof the bound supporting axis, which is inserted and pressed inside theinserted hole (e) and from the forward pant of the firearms toward themagazine; the grip (14) is hung on the axis, which is pulled out to thisside. This is the cleaning cloth body for firearms by which the insideof the firearms is cleaned; and it is very convenient in the actualbattle because it can be always reserved with the various tools in theparts of the body of the firearms.

Next, the cleaning cloth body for firearms (3c) is molded in thecylindrical, circular and elliptical forms; the inserted hole (e) ispunched in the center; the crew hole (18) is punched from the above sideto the below side and the brim (17) is made in the above side; thebinder is applied in the outside circle of the supporting axis (16),which is inserted and pressed from the above side into the screw hole(18), that is to say, the above side of the cleaning utensil (19) isinserted and they are united in a body; thus the smoke of powder, gas,dirt, dust, etc. are quickly absorbed and removed by the piston-likemovement inside the firearms.

Just as above explained, the absorbability, flexibility, mechanicalpullness and abraision-proof by many bubbles of the foamed urethaneresin are utilized and it is bearable against the high temperature of150 degees C. Accordingly, this characteristic is utilized, and thecleaning cloth is shrunk and closely touched inside the firearms; thesmoke of powder, gas, dirt, dust, sand, etc. are quickly absorbed andremoved; after used, it is steeped in the liquid of the alcoholic orfermentative detergent, waved, and washed; after that, dried, it returnsto the original state. Therefore, it is used at least several times toten; the cleaning task by it inside the firearms can be efficiently andquite simply practiced, and it can be used and thrown away.

BRIEF EXPLANATION OF THE DRAWINGS

FIG. 1 The plane figure of the cleaning cloth body for firearms of theflat-board pattern in this invention.

FIG. 2 The cross-section figure of the cleaning cloth body inside thefirearms of the flat-board pattern in this invention.

FIG. 3 The side-view figure showing the practice example in the cleaningcloth body for firearms of the flat-board pattern in this invention.

FIG. 4 The longitudinal section figure of the cleaning cloth body forfirearms of the flat-board pattern in this invention.

FIG. 5 The plane figure of the cleaning cloth body of the long-conepattern.

FIG. 6 The plane figure of the inserted hole in the center and thelength-concave part in the outside circle punched at the same timeconcerning the thick foamed urethane resin board.

FIG. 7 The plane figure of the principal part section showing thepractice example of the cleaning cloth body for firearms closely fixedin the supporting axis.

FIG. 8 The plane figure of the principal part section.

FIG. 9 The side-view figure of the principal part section showing thepractice example.

DETAILED EXPLANATION OF THE INVENTION

This invention having as the material the foamed urethane resin composedof the polyester resin liquid and the diazomianate the cleaning clothbody for firearms molded in the patterns of the flat board and the longcone, which is inserted in the washing arrow put on and off the top ofthe cleaning utensil for firearms available at present, and in theoutside circle of the washing arrow, in the forward side of the cleaningutensil is put on and off the equipment or the supporting axis insteadof the washing arrow so that the firing tube can be cleaned by thecleaning cloth body for firearms made of the foamed urethane resininvolved in this invention. The explanation of this invention makingreference to the drawings as follows:

FIG. 1 molds the board of the long-size framed urethane resin by holdingthe net-woven cloth in the middle when molded the foamed urethane resinboard made of polyester and diazomianate. Next, corresponding to thecaliber of the firearms, the foamed urethane resin board is twofolded,continually cut five millimeters larger than the size of the caliber;that is to say, 8 millimeters thick, 15 centimeters long, and 10millimeters wide; and the cleaning cloth body is formed. (The drawingsfollowing this one show the cleaning cloth body made of the foamedurethane resin molded.)

FIG. 2 is the cross-section figure. The net-woven cloth 2 is inserted inthe middle of the foamed urethane resin board (a), which is molded whenformed and cut five millimeters longer than the caliber of the firearms.

FIG. 3 shows the following.

One side of the cleaning cloth body for firearms in the flat-boardpattern made of the foamed urethane resin (1), being supported andpressed in the horizontal grain of the above part of the washing arrow(s) put on and off the top of the cleaning utensil inside the firearmsused in the present-day Ground, Marine and Air Self-Defense Forces, isinserted in the horizontal grain, twofolded along the right and left ofthe washing arrow, pushed into the muzzle of the firearms, and movedbefore and behind in order to clean. This is the drawing showing thefixed state of the invention. The mark (2) is the cloth of the net-wovenpattern, (c) is the inserted part, and (d) is the screw thread.

FIG. 4 is the cross-section figure of FIG. 5. The inserted hole (e) inthe central part of the foamed uretheane resin board (3) and the lengthconcave part in the outside circle are continually punched fivemillimeters larger than the caliber of the firearms in each process bythe puncher like FIG. 6, in the inside circle of the inserted hole (e),in the inside center of the contraction-free tube (the rubber tube) theconcave and convex parts are formed; the binder is applied in theoutside circle; the inside circle is inserted and pressed in the outsidecircle, and finally as a body the cleaning cloth body for firearms ofthe long-cone pattern is molded like FIG. 5. The marks (5) and (6) arethe above and below sides of the cleaning cloth body for firearms. Theinserted hole (e) is left in the above and below aspects; the binder isapplied; the cloth body is closely touched just as rolled in, in theabove and below part a of the contraction-free tube. This is thecleaning cloth body for firearms of the long-cone pattern.

FIGS. 6 and 7 show the following.

The insided hole in the center of the foamed urethane resin board (3h)and the length concave part (4a) in the outside circle are punched atthe same time, just as showed in FIG. 7; the binder is applied in theabove and below aspects of the foamed urethane resin, in the same sizeas the meaning arrow put on and off the top of the cleaning utensilinside the firearms: the inserted part in the below part and the screwthread in the below side pant are constructed; the binder is applied inthe outside circle of the supporting axis (8), which is inserted andpressed inside the inserted hole (e) up to the above and below sides arefixed and united, just as rolled up, to the above and below parts of thesupporting axis (8). This is the cleaning cloth body inside thefirearms. More explained, the inserted part (9) is inserted in the topof the cleaning utensil inside the firearms at present; the screw threadpart is screwed and mechanized in the screw grain constructed in thebelow part of the inserted part of the cleaning tool. These are theside-view figure and the principal cross-section figure which are thedrawings showing the practice examples of FIGS. 3 and 4.

FIG. 8 shows the following.

The fixed hole (12) is punched in the below part of the supporting axis(11) of the cleaning cloth body (3b) for firearms of the long-conepattern; the above and below side parts of the pulling string (13) areinsented, returned, bound and fixed in the below part and the fixed hole(12) of the grip (14); the grip is hung in the muzzle of the firearms,pulled out toward the magazine and cleaned. This is the cleaning clothbody for firearms which is always reserved with other tools in the partsof the body of the firearms.

FIG. 9 shows the following.

When the foamed urethane resin board (3c) is punched, the inserted hole(e) is punched in the center at the same time; the supporting axis (16)having the brim (17) on the above aspect and the screw hole (18) in thebelow part from the forward part of the foamed urethane resin boardtoward the inserted hole (e) is inserted, touched, united and molded inthe foamed urethane resin board; and is the forward part of the cleaningutensil (19) constructed in the handling part (20) screwed; thus theseare the cleaning cloth body and the cleaning tool so fixed as freely toput on and off, which show the practice examples of FIGS. 3 and 4.

THE BEST FORM TO PRACTICE THE INVENTION

Furthermore, as the practice example, concerning the cleaning cloth bodyinside the firearms of the long-cone pattern (3) (3a), the pushing-moldtype machine or the projecting-mold type machine is utilized; the irontype of the long-cone pattern is devised, the polyester and thediazomianate are mixed and filled up; the inserted hole (e) in thecenter and the length-concave part inserted in the screw grain in theoutside circle are formed; the iron type is continually opened and shutin the sp-rocket type, and the cleaning cloth body for firearms made ofthe foamed urethane resin is possible as the pushing-mold type as well.

Also, when the cleaning cloth body for firearms of the flat-boardpattern (1) is molded as the practice Example 2; in the pressure-addedpress making machine are the polyester and the diazomianate mixed andpushed out, the vesicated uletan board molded, at the same time thenet-woven cloth inserted in the middle between the foamed urethane resinand the vesicated one as the reinforcement material as detailed in theformer section, the foamed urethane resin board of the long size molded,continually cut and processed by the cutter to cut in the prescribedsize, that is to say, the length, width and thickness corresponding tothe caliber of the firearms, thereby it is possible to cut down thecost.

THE EXPERIMENT EXAMPLE 1

The cleaning cloth body for firearms made of the foamed urethane resinwas experimented by the 44th regiment at Fukushima base of the GroundSelf-Defense Force during three days from Nov. 24 through Nov. 27, 1980.The outcome of this experiment was reported by this regiment. Let usreport this outcome just as reported.

(1) The tested firearms involved in the cleaning cloth body for firearmsmade of the foamed urethane resin of the flat board pattern as follows;64 rifles, small firearms, small arms, light machine gun, heavy machinegun, 12. 7 mm Type machine gun, and 22 mm Type machine gun. One side ofthe cleaning cloth body for firearms of the flat-board pattern isprocessed and at the same time inserted in the horizontal grain of thewashing arrow put on and off the top of the cleaning utensil of theseguns, twofolded and inserted from the forward aspect of the insidemuzzle of the firearms, and moved twice or three times before and behindlike the piston movement; at the same time the foamed urethane resin hasthe quality producing many bubbles, and it is rich in the quality ofextension and contraction, furthermore, closely glued to the screw graininside the firearms; thus the bubbles are shrunk in the before andbehind, going and returning movement; the smoke of powder, gas, dirt,dust and water are quickly absorbed; both sides of theflat-board-pattern uletan twofolded in the forward and back parts of thewashing arrow are glued to the grain in the state of the screw grain; ifmoved before and behind, the smoke of powder, gas, dirt, dust and watercould be removed in the extremely short time.

(2) The most easily usable point of the cleaning cloth body for firearmsmade of the flat-board-pattern uletan is that because the 64 rifle,small firearms, light and heavy machine guns are 7.62 millimeters interms of the caliber, the cleaning cloth is suitable if it is 1.8millimeters in the twofold, 8 millimeters in the flat board, 15 to 16centimeters in the length, and 10 to 12 millimeters in the width.Regarding 12.7 mm Type machine gun, the thickness, length and width arerespectively 10 millimeters, 15 centimeters, and 14 to 15 millimeters.Regarding the 22 mm Type machine gun, it is easily usable when thethickness of the board is 15 millimeters, the twofold 30 millimeters,the length 18 millimeters, and the width is 15 millimeters. It isdesirable that the thickness in the twofold fashion is five millimetersthicker than the caliber of the firearms.

Still more, because the net-woven cloth is inserted and united in themiddle of the foamed urethane resin of the flat-board pattern, it wasseveral times stronger than the single substance of foamed urethaneresin in terms of the pulling ability, and its abrasion was small.

(3) Accordingly, the cleaning procedure inside the body of firearms isextremely quick and very good.

(4) Because it is made of the vesicated uletan, it will do if there is alittle spindle oil, etc., there is no anxiety that the oil drops, theuseless oil is not needed; and the oil is saved. For these reasons, itis the most proper in terms of the cleaning procedure. If its thicknessand width are increased, it can be used for the caliber.

(5) The cleaning cloth body for firearms made of the foamed urethaneresin of the flat-board pattern very well absorbs the smoke of powder,dirt, gas, dust, sand, etc. so that the cleaning procedure is extremelysimple.

(6) Because it is the cleaning cloth body for firearms of the flat-boardpattern, the cleaning is accomplished by a few pieces per a procedure.

(7) In the case of the cut cloth of the counterpart, more than tenpieces must be used in the machine gun, so it is uneconomical, and a lotof the spindle oil is needed because the cotton cloth must be steeped inthe oil.

(8) The cleaning cloth for firearms made of the vesicated uletan of theflat-board pattern is available in the cleaning procedure of the 64rifle, small arms, light and heavy machine guns, and up to 12.7 mm Typeand 22 mm Type guns.

(9) The cleaning cloth body for firearms made of the foamed urethaneresin of the flat-board pattern permeated with the rust-removing lotion(it consists of the liquid of the combination of the oxalic acid andalcohol, and the spindle oil.) is inserted in the muzzle of thefirearms, the rust-removing lotion is applied in the muzzle of thefirearms, after left a minute or two after that, if cleaned by thecleaning cloth body inside the firearms made of uletan, the rust can becompletely removed.

(10) After it has been used, the cleaning cloth body for firearms madeof the foamed urethane resin of the flat-board pattern is gathered andsteeped in the liquid of the alcoholic detergent or fermentative one,ten and several minutes after that left and waved, then the dirt, oiland carbon are floated and expelled, so that it can be washed likebefore used, and it has a quality of many bubbles, iswater-fast-running, and quickly dries. For this reason, it is veryeconomical. Still, it is desirable that after used, it is timely thrownaway in the actual fighting.

THE EXPERIMENT EXAMPLE 2

Next, the opinion of the experiment of the cleaning cloth body insidethe firearms made of the foamed urethane resin of the long-cone patternas follows.

The firearms are 64 rifle, small arms, light and heavy machine guns, andthe 12.7 mm Type and 22 mm Type machine guns.

When the cleaning cloth body for firearms of the long-cone pattern isequipped on the outside circle of the washing arrow put on and off thetop of the cleaning cloth body for firearms of the long-cone pattern:the contraction-free tube (the rubber tube) inserted in the insertedhole of the cleaning cloth body concerned is closely touched in thewashing arrow. When the washing arrow is inserted from the forward partof the muzzle of the firearms, because the cleaning cloth body concernedis made of the foamed urethane resin, it is inserted, closely touching,in the screw grain, extending and contracting toward the washing arrow.And after the cleaning utensil inside the firearms is supported andmoved before and behind twice to three times, the inside of the firearmsis inspected.

The cleaning cloth body for firearms made of the foamed urethane resinof the long-cone pattern is strong in terms of pulling and tearing, alot bubbling, highly absorbent, strong against the oil, abrasion, heatand cold, and the smoke of powder, gas, dirt and dust are thoroughlyremoved and the cleaning procedure is very quickly accomplished.Accordingly, it is very good in terms of the use. It is desirable thatits thickness is five millimeters thicker than the caliber of thefirearms.

Because the cleaning cloth body for firearms is made of the foamedurethane resin, a little oil suffices.

There was no waste of the oil, and it was saved. (The oil is the spindleoil, etc.)

The cleaning cloth body for firearms of the long-cone pattern is strongagainst the rust-removing lotion. The rust-removing lotion is applied inthe inside of the muzzle of the firearms by the cleaning cloth concernedpermeated with it, left a few minutes after that, and when cleared bythe cleaning cloth concerned, the rust could be completely removed.

After used, the cleaning cloth body for firearms of the long-conepattern is gathered, steeped in the liquid of the fermentative detergentor the alcoholic one, and left about ten minutes, then the dirt, dust,oil, etc. are floated and expelled. Therefore, if it is only washed inthe fluid, it can be used again.

The cleaning procedure after the blank shot has been fired: If thecleaning cloth body for firearms equipped on the washing arrow is movedbefore and behind in the firearms twice or three times only, the smokeof powder, gas, dust, dirt and water can be completely removed, and itseffectiveness is extremely conspicuous so that it is suitable in termsof the equipment and very convenient.

The cleaning procedure after the ball cartridge has been fired: When thecleaning cloth body for firearms of the long-cone pattern is inserted inthe inside of the muzzle of the firearms, moved before and behind fourto five times, the smoke of powder, dirt, dust and wet could be removedjust like in the case of the blank shot.

As above-mentioned, the foamed urethane resin both of the flat-boardpattern and of the long-cone pattern was extremely good in itsexperimental outcome. If the size of the long-cone pattern is enlarged,there is the large adaptability of the uletan concerned to the firearmsand arms of the Ground, Marine and Air Self-Defense Forces. (The 44thregiment)

THE EXPERIMENT EXAMPLE 3

(1) Because there are no firearms on the unofficial side, let us makethe introduction of the outcome of the experiment done by means of thehunting gun.

The cleaning cloth body for firearms of the flat-board pattern and thelong-cone pattern is inserted and fitted in the head of the cleaningutensil. First of all, the blank shot was fired and the cleaning clothbody concerned was inserted in the inside of the hunting gun; thus waspracticed the experiment of removing the smoke of powder, dirt, oil,water, dust, etc. The smoke of powder, dirt, wet and dust could becompletely removed by the going and returning movements, and thecleaning procedure was very easy.

In the case of the ball cartridge also, the smoke of powder, dust, dirt,and wet are completely absorbed in the cleaning cloth body, andcompletely removed if the cleaning cloth concerned is moved before andbehind twice to three times. It is usually very convenient to theadjustment of the hunting gun, too. It also can be surely adapted to thepistol. Therefore, the cleaning procedure is extremely simple and verygood.

Because there are no spiral lines in the inside of the muzzle of thehunting gun, the cleaning procedure is easier than the firearms. It canbe adapted to the cleaning and wiping of the iron tube and pipe, too.

Because the net-woven cloth is put in the middle of the cleaning clothbody for firearms of the flat-board pattern, it can be bear the pullingand tearing power of several times of the simple substance of the foamedurethane resin. It is desirable that its thickness is five millimetersthicker than the circle of the muzzle.

Both in the flat-board pattern and in the long-cone pattern, there isnot so much variableness, therefore the smoke of powder, gas, dust, dirtand wet could be quickly removed.

In the accomplishment after the cleaning procedure of the inside of thegun, if a little of the spindle oil is only applied by the cleaningcloth body concerned permeated with it, it is very convenient both tothe adjustment and to the time of the use.

The rust-removing experiment of the inside of the gun: If the mixedliquid of the oxalic acid, alcohol and the spindle oil is applied in therusted part inside the muzzle by the cleaning cloth body for firearmspermeated with it, and wiped a minute or two after that, the rust can becompletely removed.

THE OIL-PROOF EXPERIMENT

The cleaning cloth body for firearms had been steeped in the spindleoil, the rust-removing lotion and the machine oil from on August 1 toOctober 1, but the oil had been absorbed, nonetheless the form andquality of the material did not change at all. It is the material fullof the oil-proof.

THE HEAT-PROOF EXPERIMENT

Though the temperature was risen 100, 120, up to 150 degrees C., therewas no change of the cleaning cloth body concerned. It began to welt inthe 156 degrees C. The cold-proof experiment. Even though thetemperature was dropped until 40 degrees below zero, the material didnot change at all.

As explained above, the cleaning cloth body inside the firearms made ofthe foamed urethane resin of the flat-board pattern and the one of thelong-cone pattern are both consumption goods, but it has stroner manypoints than the cut cotton cloth used at present; The effect of its useis extremely conspicuous; it can be used five times to ten if it iswashed. The cloth concerned is more expensive per piece than the cutcotton cloth, but becuase it is possible to cut down the cost by themass production; it is very promising.

INDUSTRIAL ADAPTABILITY

As explained in the above each section, this invention is the productionwhich was made for the purpose of quickly removing and clearing thesmoke of powder, dirt, gas, dust, wet, oil, etc. with the close touch ofthe product concerned to the inside form of the muzzle, by theutilization of the attractive absorbability, durability against themechanical pulling and tearing, cold-proof, heat-proof, and elasticity.There are a lot of effects in the product concerned, which cannot befound in the cut cotton cloth and wasted cloth, as explained by theexperiment examples. The cleaning cloth body inside the firearms of theflat-board pattern is capable of the cleaning procedure of the muzzle ofthe caliber of 7.62 to 22 millimeters. If the cleaning cloth body forfirearms of the long-cone pattern is molded according to the caliber ofeach of 6.2 mm Type pistle, 7.62 mm Type rifle, and light and heavymachine guns, it can be adapted to all the firearms, and at the sametime it can be used five to ten times if it is washed.

Therefore, its construction is simple; it is inserted in the side holeof the forward side of the washing arrow put on and off the top of thecleaning utensil inside the firearms used at present and the head of thecleaning tool, or inserted in, and fitted to the outside circle of thewashing arrow. Thus, if the procedure is repeated that it is inserted inthe inside of the muzzle and moved before and behind, it is in the samecleaning way as the one heretofore. If it is compressed and packed inorder to carry it, it becomes a kind of board; it is light andconvenient in terms of the treatment; it is possible to process it bythe machine; the oil is saved. Therefore, the industrial effect isextremely conspicuous.

We claim:
 1. A cleaning cloth body for cleaning the inside of a barrelof a firearm, said cleaning cloth body comprising:two boards of foamedurethane resin, said two boards being molded in a substantiallyrectangular configuration, a reinforcing means interposed between saidtwo boards, said two boards being secured to said reinforcing means onopposite sides of said reinforcing means, an opening defined by said twoboards and said reinforcing means located at the center of said twoboards and said reinforcing means, said opening being adapted to receiveand be held at one end of a cleaning utensil, said cleaning utensilbeing threaded through the barrel of a firearm to be cleaned to pullsaid two boards and said reinforcing means through the barrel of thefirearm for removing foreign particles adhering to the inside of thebarrel after discharge of the firearm, and the combined thickness ofsaid two boards and said reinforcing means being greater than thediameter of the barrel of the firearm to be cleaned when said two boardsand said reinforcing means are folded over onto themselves at saidopening.
 2. A cleaning cloth body as claimed in claim 1, wherein saidreinforcing means comprises a woven net cloth.
 3. A cleaning cloth bodyfor cleaning the inside of a barrel of a firearm, said cleaning clothbody comprising:two boards of foamed urethane resin, said two boardsbeing molded in a substantially rectangular configuration, a reinforcingmeans interposed between said two boards, said two boards being securedto said reinforcing means on opposite sides of said reinforcing means, aretaining means for holding said two boards and said reinforcing means,said retaining means being adapted to be held at one end of a cleaningutensil, said cleaning utensil being threaded through the barrel of afirearm to be cleaned to pull said two boards and said reinforcing meansby said retaining means through the barrel of the firearm for removingforeign particles adhering to the inside of the barrel after dischargeof the firearm, and the combined thickness of said two boards and saidreinforcing means being greater than the diameter of the barrel of thefirearm to be cleaned when said two boards and said reinforcing meansare folded over onto themselves at said opening.
 4. A cleaning clothbody as claimed in claim 3, wherein said reinforcing means comprises awoven net cloth.